Close email message when clicking "Previous Message" button on last email

One of the features I really like is to be able to open my email and click the up arrow (Previous Message) and see the next unopened email. Currently, EMClient will do nothing once you've clicked that arrow while on the last email. That email remains on the screen. It would be very nice if, when on that last email, when you clicked the up arrow (Previous Message) the email being displayed would go away and leave you looking at your list. Thanks for listening!